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Pretreatment of Wheat Straw with Phosphoric Acid and Hydrogen Peroxide to Simultaneously Facilitate Cellulose Digestibility and Modify Lignin as Adsorbents

Effective valorization of lignin is crucial to achieve a sustainable, economic and competitive biorefinery of lignocellulosic biomass. In this work, an integrated process was proposed based on a concentrated phosphoric acid plus hydrogen peroxide (PHP) pretreatment to simultaneously facilitate cellu...

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Autores principales: Wan, Xue, Yao, Fengpei, Tian, Dong, Shen, Fei, Hu, Jinguang, Zeng, Yongmei, Yang, Gang, Zhang, Yanzong, Deng, Shihuai
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6995591/
https://www.ncbi.nlm.nih.gov/pubmed/31817992
http://dx.doi.org/10.3390/biom9120844
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author Wan, Xue
Yao, Fengpei
Tian, Dong
Shen, Fei
Hu, Jinguang
Zeng, Yongmei
Yang, Gang
Zhang, Yanzong
Deng, Shihuai
author_facet Wan, Xue
Yao, Fengpei
Tian, Dong
Shen, Fei
Hu, Jinguang
Zeng, Yongmei
Yang, Gang
Zhang, Yanzong
Deng, Shihuai
author_sort Wan, Xue
collection PubMed
description Effective valorization of lignin is crucial to achieve a sustainable, economic and competitive biorefinery of lignocellulosic biomass. In this work, an integrated process was proposed based on a concentrated phosphoric acid plus hydrogen peroxide (PHP) pretreatment to simultaneously facilitate cellulose digestibility and modify lignin as adsorbent. As a dominant constitutor of PHP pretreatment, H(2)O(2) input and its influence on the overall fractionation/lignin modification performance was thoroughly investigated. Results indicated that wheat straw was fractionated more efficiently by increasing the H(2)O(2) input. H(2)O(2) input had a significant influence on the digestibility of the obtained cellulose-rich fraction whereby almost 100.0% cellulose-glucose conversion can be achieved even with only 0.88% H(2)O(2) input. Besides, the adsorption capacity of lignin on MB was improved (74.3 to 210.1 mg g(−1)) due to the oxidative-modification in PHP pretreatment with H(2)O(2) inputs. Regression analysis indicated that –COOH groups mainly governed the lignin adsorption (R(2) = 0.946), which displayed the considerable adsorption capacities for typical cationic substances. This work shows a promising way to integrate the lignin modification concept into the emerging PHP pretreatment process with the dual goal of both cellulose utilization and lignin valorization.
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spelling pubmed-69955912020-02-13 Pretreatment of Wheat Straw with Phosphoric Acid and Hydrogen Peroxide to Simultaneously Facilitate Cellulose Digestibility and Modify Lignin as Adsorbents Wan, Xue Yao, Fengpei Tian, Dong Shen, Fei Hu, Jinguang Zeng, Yongmei Yang, Gang Zhang, Yanzong Deng, Shihuai Biomolecules Article Effective valorization of lignin is crucial to achieve a sustainable, economic and competitive biorefinery of lignocellulosic biomass. In this work, an integrated process was proposed based on a concentrated phosphoric acid plus hydrogen peroxide (PHP) pretreatment to simultaneously facilitate cellulose digestibility and modify lignin as adsorbent. As a dominant constitutor of PHP pretreatment, H(2)O(2) input and its influence on the overall fractionation/lignin modification performance was thoroughly investigated. Results indicated that wheat straw was fractionated more efficiently by increasing the H(2)O(2) input. H(2)O(2) input had a significant influence on the digestibility of the obtained cellulose-rich fraction whereby almost 100.0% cellulose-glucose conversion can be achieved even with only 0.88% H(2)O(2) input. Besides, the adsorption capacity of lignin on MB was improved (74.3 to 210.1 mg g(−1)) due to the oxidative-modification in PHP pretreatment with H(2)O(2) inputs. Regression analysis indicated that –COOH groups mainly governed the lignin adsorption (R(2) = 0.946), which displayed the considerable adsorption capacities for typical cationic substances. This work shows a promising way to integrate the lignin modification concept into the emerging PHP pretreatment process with the dual goal of both cellulose utilization and lignin valorization. MDPI 2019-12-08 /pmc/articles/PMC6995591/ /pubmed/31817992 http://dx.doi.org/10.3390/biom9120844 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Wan, Xue
Yao, Fengpei
Tian, Dong
Shen, Fei
Hu, Jinguang
Zeng, Yongmei
Yang, Gang
Zhang, Yanzong
Deng, Shihuai
Pretreatment of Wheat Straw with Phosphoric Acid and Hydrogen Peroxide to Simultaneously Facilitate Cellulose Digestibility and Modify Lignin as Adsorbents
title Pretreatment of Wheat Straw with Phosphoric Acid and Hydrogen Peroxide to Simultaneously Facilitate Cellulose Digestibility and Modify Lignin as Adsorbents
title_full Pretreatment of Wheat Straw with Phosphoric Acid and Hydrogen Peroxide to Simultaneously Facilitate Cellulose Digestibility and Modify Lignin as Adsorbents
title_fullStr Pretreatment of Wheat Straw with Phosphoric Acid and Hydrogen Peroxide to Simultaneously Facilitate Cellulose Digestibility and Modify Lignin as Adsorbents
title_full_unstemmed Pretreatment of Wheat Straw with Phosphoric Acid and Hydrogen Peroxide to Simultaneously Facilitate Cellulose Digestibility and Modify Lignin as Adsorbents
title_short Pretreatment of Wheat Straw with Phosphoric Acid and Hydrogen Peroxide to Simultaneously Facilitate Cellulose Digestibility and Modify Lignin as Adsorbents
title_sort pretreatment of wheat straw with phosphoric acid and hydrogen peroxide to simultaneously facilitate cellulose digestibility and modify lignin as adsorbents
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6995591/
https://www.ncbi.nlm.nih.gov/pubmed/31817992
http://dx.doi.org/10.3390/biom9120844
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